| article html file updated | 6 February 2020 20:06 CET | Update | https://www.mdpi.com/2076-0817/4/3/431 |
| article html file updated | 6 May 2019 16:55 CEST | Update | N/A |
| article html file updated | 26 March 2019 05:31 CET | Update | N/A |
| article html file updated | 28 September 2015 11:54 CEST | Update | N/A |
| article xml file uploaded | 28 September 2015 11:54 CEST | Update | https://www.mdpi.com/2076-0817/4/3/431/xml |
| article html file updated | 21 August 2015 14:10 CEST | Update | N/A |
| article html file updated | 7 July 2015 12:52 CEST | Original file | N/A |
| article xml file uploaded | 7 July 2015 12:52 CEST | Original file | N/A |
| article pdf uploaded. | 1 July 2015 09:41 CEST | Updated version of record | https://www.mdpi.com/2076-0817/4/3/431/pdf |
| article pdf uploaded. | 26 June 2015 13:50 CEST | Version of Record | https://www.mdpi.com/2076-0817/4/3/431/pdf-vor |
